2402731 has 2 divisors, whose sum is σ = 2402732. Its totient is φ = 2402730.

The previous prime is 2402707. The next prime is 2402747. The reversal of 2402731 is 1372042.

2402731 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2402731 is a prime.

It is a super-2 number, since 2×2402731² = 11546232516722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2402699 and 2402708.

It is not a weakly prime, because it can be changed into another prime (2402761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1201365 + 1201366.

It is an arithmetic number, because the mean of its divisors is an integer number (1201366).

2^2402731 is an apocalyptic number.

2402731 is a deficient number, since it is larger than the sum of its proper divisors (1).

2402731 is an equidigital number, since it uses as much as digits as its factorization.

2402731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2402731 is about 1550.0745143379. The cubic root of 2402731 is about 133.9373546934.

Adding to 2402731 its reverse (1372042), we get a palindrome (3774773).

The spelling of 2402731 in words is "two million, four hundred two thousand, seven hundred thirty-one".